Acoustic properties of porous metamaterials featured by acoustic streaming - homogenization based modelling

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F24%3A43973625" target="_blank" >RIV/49777513:23520/24:43973625 - isvavai.cz</a>
Result on the web
<a href="https://www.ingentaconnect.com/content/ince/incecp/2024/00000270/00000002/art00101" target="_blank" >https://www.ingentaconnect.com/content/ince/incecp/2024/00000270/00000002/art00101</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3397/IN_2024_4321" target="_blank" >10.3397/IN_2024_4321</a>

Result language
angličtina
Original language name
Acoustic properties of porous metamaterials featured by acoustic streaming - homogenization based modelling
Original language description
We consider secondary effects induced by acoustic waves in viscous barotropic fluids saturating pores in elastic, or rigid scaffolds with elastically suspended particles. The asymptotic homogenization method is applied to derive models of the acoustic wave propagation and of the related acoustic streaming (AS) as the secondary effect. This phenomenon originating due to the nonlinearity (divergence of the Reynolds stress) in the Navier Stokes equation is retained using the perturbation analysis. This yields the first and the second order sub-problem enabling to linearize the model governing fluid dynamics. The local AS in the microstructure produces forces acting on the suspended particles, transforming the pore geometry, hence, modulating the acoustic properties. As the consequence, the permeability involved in both the subproblems is modified due to the slowly oscillating particles. The sensitivity analysis can be employed to introduce the homogenized coefficients of the model depending on the particle motion.
Czech name
—
Czech description
—

Project
<a href="/en/project/GA24-12291S" target="_blank" >GA24-12291S: Multiscale modelling of acoustics-driven fluid suspensions flows in adaptive porous structures</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
INTER-NOISE and NOISE-CON Congress and Conference Proceedings
ISBN
979-8-3313-2215-1
ISSN
0736-2935
e-ISSN
0736-2935
Number of pages
9
Pages from-to
9906-9914
Publisher name
Neuveden
Place of publication
Neuveden
Event location
Nantes, France
Event date
Aug 25, 2024
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
—

Similar results(10)